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2016-07-14linux/io.h: add generic ioremap()/iounmap() definesMasahiro Yamada
For most of architectures in U-Boot, virtual address is straight mapped to physical address. So, it makes sense to have generic defines of ioremap and friends in <linux/io.h>. All of them are just empty and will disappear at compile time, but they will be helpful to implement drivers which are counterparts of Linux ones. I notice MIPS already has its own implementation, so I added a Kconfig symbol CONFIG_HAVE_ARCH_IOREMAP which MIPS (and maybe Sandbox as well) can select. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
2015-05-28include: introduce include/linux/io.h as a wrapper of asm/io.hMasahiro Yamada
In the latest Linux coding style, <linux/io.h> should be included rather than <asm/io.h>. To follow this standard also in U-Boot, add include/linux/io.h. Currently, it just includes <asm/io.h>. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>